OPTICAL FILTER

PROBLEM TO BE SOLVED: To provide a new method of constructing and manufacturing a micro-optical filter. SOLUTION: An optical interference filter 2 is provided by a substrate 1 in which a plurality of parallel slots are formed so as to define layers (slots and substrate laminate) of alternating refra...

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Bibliographische Detailangaben
Hauptverfasser:	MCNIE MARK EDWARD, SMITH GILBERT WILLIAM, LEWIS KEITH LODER
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a new method of constructing and manufacturing a micro-optical filter. SOLUTION: An optical interference filter 2 is provided by a substrate 1 in which a plurality of parallel slots are formed so as to define layers (slots and substrate laminate) of alternating refractive index. As shown, the filter comprises a central Fabry-Perot resonator slot cavity 3 between two mirror groups of alternating slots and substrate laminate, and is coupled to optical fibers 7 accommodated in V-grooves 6 on either side. For tuning, one mirror group 5 may be movable in the direction of an arrow A, or, where the central resonator is provided by substrate material, by altering its temperature. One or more further Fabry-Perot filters may be formed in the substrate and coupled to the filter 2. The invention encompasses non-resonating filters. COPYRIGHT: (C)2009,JPO&INPIT